The article investigates the structure, mechanical and electrical properties of spark plasma sintered metal-based Ti-Al-C system composite materials. The initial powder consisting of 85% titanium and 15% aluminum was treated in kerosene by high voltage electrical discharge. Such a powder treatment allowed the formation of carbides and MAX-phases that strengthened sintered composites by spark plasma sintering. The microstructure of Ti-Al-C samples was examined by optical and electron scanning microscopy. Vickers hardness measurement revealed high microhardness – approximately 500–550 HV and more, depending on the sintering temperature of the samples. X-ray diffraction was used to determine the phase composition of samples. The electrical properties of the Ti-Al-C composites were evaluated by measuring their resistivity.
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Acknowledgments
The presented work was performed with partial financial support from the Research Council of Lithuania and the Ministry of Education and Science of Ukraine in the framework of the "Application of High-Concentrated Energy Flows for Producing Nanostructured Polyfunctional Composite Materials” joint project according to the results of joint Ukrainian-Lithuanian R&D projects for the period of 2022–2023 contest (Reg. No. P-LUP-22-5).
In addition, the authors would like to express their gratitude to the Armed Forces of Ukraine for their bravery, which made this work possible even in the dark times of war.
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Translated from Problemy Mitsnosti, No. 3, p. 121, May – June, 2023.
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Kandrotaitė-Janutienė, R., Mažeika, D. & Sizonenko, O. Investigation of a Structure and Mechanical and Electrical Properties of Ti-Al-C System Composites. Strength Mater 55, 566–574 (2023). https://doi.org/10.1007/s11223-023-00549-w
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DOI: https://doi.org/10.1007/s11223-023-00549-w